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https://issues.apache.org/jira/browse/ATLAS-2460?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ashutosh Mestry updated ATLAS-2460:
-----------------------------------
Description:
*Background*
The most recent version of Atlas uses _JanusGraph_ as database. Earlier
versions used to use _Titan v0.5.4_. The formats used for storing data have
changed.
The current version of Atlas also implement features within Atlas entities.
This makes the storages structures differ.
A data migration approach thus becomes necessary to address the format
incompatibilities.
*Approach*
Earlier version of Atlas could use _Export_ process to extract data out of the
_Titan_ database. This ZIP file would then be moved to a cluster with newer
version of Atlas installed. An _Import_ process on the new cluster would update
the new cluster with data migrated to the new format.
It should be possible for _Data Migration_ to be initiated from Ambari, so that
it becomes part of the Ambari's upgrade process.
was:
*Background*
The most recent version of Atlas uses _JanusGraph_ as database. Earlier
versions used to use _Titan v0.5.4_. The formats used for storing data have
changed.
The current version of Atlas also implement features within Atlas entities.
This makes the storages structures differ.
A data migration approach thus becomes necessary to address the format
incompatibilities.
*Approach***
Earlier version of Atlas could use _Export_ process to extract data out of the
_Titan_ database. This ZIP file would then be moved to a cluster with newer
version of Atlas installed. An _Import_ process on the new cluster would update
the new cluster with data migrated to the new format.
It should be possible for _Data Migration_ to be initiated from Ambari, so that
it becomes part of the Ambari's upgrade process.
> Data Migration: Moving Data from Earlier Versions of Atlas to Most Recent
> -------------------------------------------------------------------------
>
> Key: ATLAS-2460
> URL: https://issues.apache.org/jira/browse/ATLAS-2460
> Project: Atlas
> Issue Type: Improvement
> Components: atlas-core
> Affects Versions: trunk
> Reporter: Ashutosh Mestry
> Assignee: Ashutosh Mestry
> Priority: Major
> Attachments: ATLAS-2460-Data-Migration.patch
>
>
> *Background*
> The most recent version of Atlas uses _JanusGraph_ as database. Earlier
> versions used to use _Titan v0.5.4_. The formats used for storing data have
> changed.
> The current version of Atlas also implement features within Atlas entities.
> This makes the storages structures differ.
> A data migration approach thus becomes necessary to address the format
> incompatibilities.
> *Approach*
> Earlier version of Atlas could use _Export_ process to extract data out of
> the _Titan_ database. This ZIP file would then be moved to a cluster with
> newer version of Atlas installed. An _Import_ process on the new cluster
> would update the new cluster with data migrated to the new format.
> It should be possible for _Data Migration_ to be initiated from Ambari, so
> that it becomes part of the Ambari's upgrade process.
>
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